Vue.prototype.$loading = () => {
  return ELEMENT.Loading.service({
    lock: true,
    text: 'Loading',
    spinner: 'el-icon-loading',
    background: 'rgba(0, 0, 0, 0.7)'
  })
}
Vue.prototype.$ELEMENT = { size: 'mini', zIndex: 3000 };
Vue.prototype.$success = ELEMENT.Message.success
Vue.prototype.$error = ELEMENT.Message.error
Vue.prototype.$warning = ELEMENT.Message.warning
Vue.prototype.$fastLoading = Vue.prototype.$loading
Vue.prototype.$message = ELEMENT.Message
Vue.prototype.$notify = ELEMENT.Notification;